parameters. Asynchronous single-OID SNMP requests A new get[OID] SNMP item has been added allowing to query for a single OID value asynchronously. Internal items Internal items have been added to monitor used by the system (in kilobytes). • User macro resolving has been moved from the preprocessing manager to preprocessing workers. Agent 2 configuration Buffer size The default value of the BufferSize between service checks. A new discovery manager process has been added along with a configurable number of discovery workers (or threads). 15 The discovery manager processes discovery rules and creates

templates are now available for out-of-the-box monitoring: Cisco • Cisco UCS Manager SNMP - monitoring of Cisco UCS Manager via SNMP. DELL PowerEdge • DELL PowerEdge R720 by HTTP - monitoring of DELL been added to PostgreSQL plugin for Zabbix agent 2. The metric pgsql.queries is used for monitoring query execution time. Templates The following templates have been updated: • The template Generic Java version. Then, while in Configuration → Templates, you can import them manually into Zabbix. 36 Query separate tablespaces in Oracle databases with Zabbix agent 2 The following Zabbix agent 2 items, supported

in case of Zabbix agent, SNMP, JMX items. Pollers, unreachable pollers, JMX pollers and the IPMI manager would update host availability directly in the database with a separate transaction for each host new availability manager process has been introduced. All processes queue host availability updates to the availability manager and that queue is flushed by the availability manager to the database every templates are now available for out-of-the-box monitoring: Cisco • Cisco UCS Manager SNMP - monitoring of Cisco UCS Manager via SNMP. HP ProLiant • HPE ProLiant BL460 SNMP - monitoring of HPE ProLiant

for Zabbix server performance, as data from proxies will no longer go through the preprocessing manager, the affected proxies will require more resources than before. 10 Warning: The change affects Telegraf and others. Zabbix uses HTTP items to access Prometheus metrics and then uses preprocessing to query the metrics for specific values. See Prometheus checks. TimescaleDB support In the new version Zabbix consisting of a config- urable number of low-level discovery workers and a low-level discovery manager. This change greatly reduces low-level discovery impact on data gathering (poller, trapper processes)

external systems In this development, two new processes have been added to Zabbix server: connector manager and connector worker. A new Zabbix internal item zabbix[connector_queue] allows to monitor the count requests; it was not available for regular SNMP items and also discovered SNMP items would have to query the devices independently. Using the new SNMP walk[OID1,OID2,...] item, it becomes possible to collect agent 2 A new item has been added to MySQL plugin for Zabbix agent 2. This new item, mysql.custom.query, can be used for executing custom MySQL queries. Templates New template is available: • AWS Cost

encoding formats supported by libcurl are supported. Preprocessing Prometheus query language Zabbix Prometheus preprocessing query language now supports two additional label matching operators: • != -- select HTTP • Kubernetes cluster state by HTTP • Kubernetes API server by HTTP • Kubernetes Controller manager by HTTP • Kubernetes Scheduler by HTTP • Kubernetes kubelet by HTTP To enable Kubernetes monitoring been added to PostgreSQL plugin for Zabbix agent 2. The metric pgsql.queries is used for monitoring query execution time. Templates A new template OpenWeatherMap by HTTP is now available allowing to monitor

API) it is added to the items table in the database. Then, about once a minute Zabbix server will query the items table for a list of the items which are active that is then stored in a cache within the valuecache - value cache statistics preprocessing - preprocessing manager statistics alerting - alert manager statistics lld - LLD manager statistics locks - list of mutexes secrets_reload Reload secrets The scripts are located under directory misc/init.d. Server process types • alert manager - alert queue manager • alert syncer - alert DB writer • alerter - process for sending notifications • configuration

message when marking the Delete missing option for template linkage will no longer be displayed. Query separate tablespaces in Oracle databases with Zabbix agent 2 The following Zabbix agent 2 items, supported ] • oracle.ts.stats[,,] These parameters allow to query separate instances of data instead of all data, thus improving performance. Retrieving additional templates New templates are available now: • Control-M enterprise manager by HTTP • Control-M server by HTTP • Veeam Backup Enterprise Manager by HTTP • Veeam Backup and Replication by HTTP 16 See setup

dependent items. Dependent items use the master item to collect their data simultaneously, in one query. A new value for the master item automatically populates the values of the dependent items. Zabbix be sent. In the new version, parallel processing of alerts is implemented. There is a new alert manager process that can distribute alerts to several ”worker” processes, if needed. Media types are processed Retry interval: • Functionality of the database watchdog process has been merged into the alert manager and the watchdog process itself removed. 6 Improved notifications 6.1 Notification on problem acknowledgement

the moment when an event is generated for a problem or recovery. Zabbix frontend can search and query the respective tables directly. This change leads to a better separation of triggers and problems either of these two items. There are also another two new items allowing to specifically remotely query internal queue stats: • zabbix[stats,,,queue,,] internal item - for direct internal API) it is added to the items table in the database. Then, about once a minute Zabbix server will query the items table for a list of the items which are active that is then stored in a cache within the